Malicious PDF — malware analysis report

Static analysis result for SHA-256 251b0cd275ad4b8b…

MALICIOUS

PDF

60.3 KB Created: 2020-12-27 12:42:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c52244d861fd567aad481dcb577ddb15 SHA-1: 9dfa948e6b7acf83e72cd5f9ce86f939f2e23bda SHA-256: 251b0cd275ad4b8baff2950cf8c6ea5e3df2f9856a81a0a40d03d9ac20a78b0c
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffine.ru/123?utm_term=precious+moments+nativity+music+box PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373240/normal_5fdc8724678e8.pdfIn PDF document text
    • https://cdn.sqhk.co/xisiwuba/cjclKYv/86486259473.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413862/normal_5f96da832f17a.pdfIn PDF document text
    • https://cdn.sqhk.co/filomada/U08HqSJ/50392127041.pdfIn PDF document text
    • https://cdn.sqhk.co/masunidupag/hihfvfz/dogemuwapofojimisoxozen.pdfIn PDF document text
    • https://cdn.sqhk.co/sirejeforox/gggfBhj/videoshop_video_editor_for_pc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487005/normal_5fda14be1b3a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370051/normal_5fbc1c63235bb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489852/normal_5fc592421cdac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/851ffc08-34b5-4242-8051-1b11c9a9e05c/61854384863.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbc47139-823c-4aa6-8c39-098eabcbb704/80388399171.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b0b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0B9 5284 bytes
SHA-256: a25f1de6ab755080bef175987d002a22721ad4ac52d9929af2ba6124014c88cd
font_01_sfnt_off0000c2a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2A5 9896 bytes
SHA-256: 6a0046512dc56a3a4542264b6e8529b2a3aa9dc01e467955e2877800b78ce5f1